DQRs for Session: 120234 User:srrbCompleted: 06-12-2009

Data Quality Reports for Session: 120234 User: srrb Completed: 06/12/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D080121.2	TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone	twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1, twpgndradC3.00
D080211.2	TWP/SKYRAD/C1 - Failed PSP ventilator fan	twpskyrad20sC1.a0, twpskyrad60sC1.b1
D080225.1	TWP/SMET/C3 - Upper Wind Sensor Data Questionable	twpsmet60sC3.b1
D080313.2	TWP/SKYRAD/C2 - Direct Normal reading too low	twpskyrad20sC2.a0, twpskyrad60sC2.b1, twpskyradC2.00
D080414.1	TWP/SKYRAD/C3 - IRT power supply	twpskyrad60sC3.b1
D080611.2	TWP/SMET/C3 - Lower Wind Direction Intermittently Wrong	twpsmet60sC3.b1
D080617.1	TWP/SMET/C2 - ORG rainfall measurements too large	twpsmet60sC2.b1
D080618.1	TWP/SKYRAD/C1 - Tracker Failure	twpskyrad20sC1.a0, twpskyrad60sC1.b1
D080707.2	TWP/SMET/C1 - ORG Precip Data Incorrect	twpsmet60sC1.b1
D080715.1	TWP/SMET/C3 - Upper wind speed data incorrect	twpsmet60sC3.b1
D080826.3	TWP/SKYRAD/C1 - PIR2 ventilator fan failure	twpskyrad20sC1.a0, twpskyrad60sC1.b1
D080904.3	TWP/SKYRAD/C1 - IRT measurement error	twpskyrad60sC1.b1
D080904.6	TWP/SKYRAD/C3 - Contamination	twpskyrad60sC3.b1
D080925.1	TWP/SONDE/C2 - Bad RH values throughout sounding	twpsondewnpnC2.b1
D081022.3	TWP/SMET/C1 - Wind Speed data contain offset due to induced voltage	twpsmet60sC1.b1
D081022.5	TWP/SMET/C2 - Wind Speed data contain offset due to induced voltage	twpsmet60sC2.b1
D081022.8	TWP/SMET/C3 - Wind Speed data contain offset due to induced voltage	twpsmet60sC3.b1
D081027.2	TWP/SMET/C2 - ORG rainrate high due to calibration.	twpsmet60sC2.b1
D081114.1	TWP/SONDE/C2 - Defective Temperature Sensor	twpsondewnpnC2.b1
D081222.2	TWP/SKYRAD/C3 - Direct normal instrument failure	twpskyrad20sC3.a0, twpskyrad60sC3.b1
D081222.3	TWP/SKYRAD/C2 - Tracker failure	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D090129.1	TWP/SKYRAD/C3 - Tracker inoperative	twpskyrad20sC3.a0, twpskyrad60sC3.b1
D090129.4	TWP/SMET/C3 - Reprocess: Station Pressure values reported in hPa instead of kPa.	twpsmet60sC3.b1
D090224.4	TWP/SONDE/C2 - Suspect RH values	twpsondewnpnC2.b1
D090304.1	TWP/SMET/C1 - Optical Rain Gage Inoperative	twpsmet60sC1.b1
D090328.1	TWP/SKYRAD/C2 - Tracker inoperative	twpskyrad20sC2.a0, twpskyrad60sC2.b1
D090515.1	TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees	twpsmet60sC3.b1
D090605.2	TWP/SKYRAD/C2 - Instrument grounding problem	twpskyrad20sC2.a0, twpskyrad60sC2.b1

DQRID : D080121.2

Start Date	Start Time	End Date	End Time
01/03/2008	1000	01/07/2008	0515

Subject:	TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone
DataStreams:	twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1, twpgndradC3.00
Description:	On Jan 3rd approximately 1000GMT the effects of a tropical cyclone started affecting the installed radiometer measurements at ARM/TWP/C3(Darwin) - both Skyrad and Gndrad. On Jan 4th 0740 GMT the Gndrad station was shutdown to avoid damage due to the close passing of this storm. Station was restarted Jan 7th 0515GMT.
Measurements:	twpgndradC3.00: null(Raw data stream - documentation not supported) twpgndrad20sC3.a1: lon(lon) Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist) lat(lat) Dummy altitude for Zeb(alt) Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp) Time offset of tweaks from base_time(time_offset) Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist) base time(base_time) twpgndrad20sC3.a0: Time offset of tweaks from base_time(time_offset) Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal) Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp) time(time) base time(base_time) Dummy altitude for Zeb(alt) Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp) lat(lat) lon(lon) twpgndrad60sC3.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) lat(lat) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Effective Surface (Skin) Temperature(sfc_ir_temp) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) Logger panel temperature(logger_temp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max) lon(lon) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard Deviation(up_long_hemisp_std) base time(base_time) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp) Time offset of tweaks from base_time(time_offset) Dummy altitude for Zeb(alt)

Back To Table of Contents

DQRID : D080211.2

Start Date	Start Time	End Date	End Time
01/31/2008	0000	02/08/2008	0248

Subject:	TWP/SKYRAD/C1 - Failed PSP ventilator fan
DataStreams:	twpskyrad20sC1.a0, twpskyrad60sC1.b1
Description:	On 1/31 the ventilator for the PSP measuring downwelling_shortwave_hemispheric irradiance failed. The DQ effect of this failure on the measurement of down_short_hemisp is not possible to fully quantify but it has been noted that during these failures the PSP nighttime values can be several (1-3W/m2) smaller than usual. Another effect is slower thermal response (1hr) of the PSP instrument due to daytime heating and cooling of the ventilator housing.
Measurements:	twpskyrad20sC1.a0: Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) twpskyrad60sC1.b1: Down-welling unshaded pyranometer voltage(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)

Back To Table of Contents

DQRID : D080225.1

Start Date	Start Time	End Date	End Time
01/05/2008	0000	02/27/2008	0315

Subject:	TWP/SMET/C3 - Upper Wind Sensor Data Questionable
DataStreams:	twpsmet60sC3.b1
Description:	The wind_up vs. wind_low wind directions diverged, with the differences between the two eventually reached 45 degrees. The Upper sensor was found to be mis-aligned and loose.
Measurements:	twpsmet60sC3.b1: Upper sensor, wind speed maximum(up_spd_max) Upper sensor, wind speed arithmetic average(up_spd_arith_avg) Upper sensor, wind speed minimum(up_spd_min) Upper sensor, wind speed vector average(up_spd_vec_avg) Upper sensor, wind speed standard deviation(up_spd_sd)

Back To Table of Contents

DQRID : D080313.2

Start Date	Start Time	End Date	End Time
03/02/2008	2230	03/10/2008	2130

Subject:	TWP/SKYRAD/C2 - Direct Normal reading too low
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1, twpskyradC2.00
Description:	The NIP (direct_normal shortwave irradiance) measurement was reading too low during this time period. No TWP Ops documentation could be found to determine the cause but data review indicate that the NIP appeared to be reading low by about 25W/m2 during this period. The NIP data had well defined steps in irradiance when compared to three component checks indicating the problem period.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) twpskyradC2.00: null(Raw data stream - documentation not supported)

Back To Table of Contents

DQRID : D080414.1

Start Date	Start Time	End Date	End Time
04/11/2008	1901	04/14/2008	2205

Subject:	TWP/SKYRAD/C3 - IRT power supply
DataStreams:	twpskyrad60sC3.b1
Description:	The 12-to-24V DC converter the provides power to the IRT had shut down and was restarted by power-cycling.
Measurements:	twpskyrad60sC3.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra-Red Temperature(sky_ir_temp) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

Back To Table of Contents

DQRID : D080611.2

Start Date	Start Time	End Date	End Time
05/27/2008	1945	06/24/2008	0113

Subject:	TWP/SMET/C3 - Lower Wind Direction Intermittently Wrong
DataStreams:	twpsmet60sC3.b1
Description:	The lower wind sensor cabling had a problem causing an intermittent connection for the wind direction data.
Measurements:	twpsmet60sC3.b1: Lower sensor, wind direction vector average(lo_dir_vec_avg) Lower sensor, wind direction standard deviation(lo_dir_sd)

Back To Table of Contents

DQRID : D080617.1

Start Date	Start Time	End Date	End Time
05/08/2008	0000	08/07/2008	2300

Subject:	TWP/SMET/C2 - ORG rainfall measurements too large
DataStreams:	twpsmet60sC2.b1
Description:	The ORG was collecting large amounts of rainfall compared to the co-located tipping bucket raingauge. The cable was chewed by mice causing the wires to make contact intermittently mimicking rainfall.
Measurements:	twpsmet60sC2.b1: Precipitation maximum(precip_max) Precipitation mean(precip_mean) precipitation minimum(precip_min) Precipitation standard deviation(precip_sd)

Back To Table of Contents

DQRID : D080618.1

Start Date	Start Time	End Date	End Time
06/10/2008	2000	06/12/2008	0800

Subject:	TWP/SKYRAD/C1 - Tracker Failure
DataStreams:	twpskyrad20sC1.a0, twpskyrad60sC1.b1
Description:	The solar tracker at C1 failed to wake up the morning of 6/10 approximately 2000GMT. Ops discovered problem and reset tracker 6/12 approximately 0800GMT. Tracker dependent instrument data is inaccurate - this includes the short_direct (NIP) and down_short_diffuse_hemisp (8-48). The down_short_hemisp (PSP) and down_long_hemisp (PIR) are unaffected.
Measurements:	twpskyrad20sC1.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) twpskyrad60sC1.b1: Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)

Back To Table of Contents

DQRID : D080707.2

Start Date	Start Time	End Date	End Time
02/07/2008	1300	02/09/2008	0600

Subject:	TWP/SMET/C1 - ORG Precip Data Incorrect
DataStreams:	twpsmet60sC1.b1
Description:	Moisture intrusion into the sensor body allowed condensation on the lens of the ORG. Continual and long-term precipitation was reported during this time.
Measurements:	twpsmet60sC1.b1: Precipitation mean(precip_mean) Precipitation maximum(precip_max) Precipitation standard deviation(precip_sd) precipitation minimum(precip_min)

Back To Table of Contents

DQRID : D080715.1

Start Date	Start Time	End Date	End Time
07/08/2008	2045	07/17/2008	0144

Subject:	TWP/SMET/C3 - Upper wind speed data incorrect
DataStreams:	twpsmet60sC3.b1
Description:	Beginning on 07/08, the upper wind sensor started reporting significantly lower wind speeds than the lower wind sensor. The cable connections weather proofing failed allowing corrosion to occur and increasing he resistance of the cables. This in turn lowered the wind speeds artificially.
Measurements:	twpsmet60sC3.b1: Upper sensor, wind speed maximum(up_spd_max) Upper sensor, wind speed arithmetic average(up_spd_arith_avg) Upper sensor, wind speed minimum(up_spd_min) Upper sensor, wind speed vector average(up_spd_vec_avg) Upper sensor, wind speed standard deviation(up_spd_sd)

Back To Table of Contents

DQRID : D080826.3

Start Date	Start Time	End Date	End Time
08/14/2008	0200	08/18/2008	0545

Subject:	TWP/SKYRAD/C1 - PIR2 ventilator fan failure
DataStreams:	twpskyrad20sC1.a0, twpskyrad60sC1.b1
Description:	During the time range specified the PIR2 output is questionable due to ventilator fan failure. Although the PIR is temperature compensated, data review indicates that the PIR2 didn't compare as well with PIR1. Typical differences during full sun are approximately 10 w/m2. During this time period differences of 10-14 W/m2 were noted.
Measurements:	twpskyrad20sC1.a0: Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_case_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_dome_resist) twpskyrad60sC1.b1: Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max)

Back To Table of Contents

DQRID : D080904.3

Start Date	Start Time	End Date	End Time
08/18/2008	0315	10/01/2008	2342

Subject:	TWP/SKYRAD/C1 - IRT measurement error
DataStreams:	twpskyrad60sC1.b1
Description:	The IRT was not able to measure sky temperatures below 273.2 K. (This instrument was the same one damaged by lightning in November 2005 in Darwin. It was returned for repair in April 2006 and again in April 2007 and both times calibrated only down to 0 deg C, so the problem was neither detected nor repaired.) The problem was corrected by replacing the IRT.
Measurements:	twpskyrad60sC1.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

Back To Table of Contents

DQRID : D080904.6

Start Date	Start Time	End Date	End Time
06/08/2008	0000	09/05/2008	0053

Subject:	TWP/SKYRAD/C3 - Contamination
DataStreams:	twpskyrad60sC3.b1
Description:	The IRT exhibited a positive bias compared to AERI. The problem was corrected when the lens and mirror were cleaned.
Measurements:	twpskyrad60sC3.b1: Sky Infra Red Temperature Minima(sky_ir_temp_min) Sky Infra-Red Temperature(sky_ir_temp) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)

Back To Table of Contents

DQRID : D080925.1

Start Date	Start Time	End Date	End Time
09/08/2008	1145	09/08/2008	1145

Subject:	TWP/SONDE/C2 - Bad RH values throughout sounding
DataStreams:	twpsondewnpnC2.b1
Description:	RH values fluctuate largely in a stepping function throughout the sounding. Suspect bad RH sensors.
Measurements:	twpsondewnpnC2.b1: Relative humidity inside the instrument enclosure(rh)

Back To Table of Contents

DQRID : D081022.3

Start Date	Start Time	End Date	End Time
10/09/1996	0000	11/03/2008	0730

Subject:	TWP/SMET/C1 - Wind Speed data contain offset due to induced voltage
DataStreams:	twpsmet60sC1.b1
Description:	The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s.
Measurements:	twpsmet60sC1.b1: Lower sensor, wind speed vector average(lo_spd_vec_avg) Lower sensor, wind speed arithmetic average(lo_spd_arith_avg) Upper sensor, wind speed maximum(up_spd_max) Upper sensor, wind speed arithmetic average(up_spd_arith_avg) Lower sensor, wind speed minimum(lo_spd_min) Lower sensor, wind speed standard deviation(lo_spd_sd) Upper sensor, wind speed vector average(up_spd_vec_avg) Upper sensor, wind speed minimum(up_spd_min) Upper sensor, wind speed standard deviation(up_spd_sd) Lower sensor, wind speed maximum(lo_spd_max)

Back To Table of Contents

DQRID : D081022.5

Start Date	Start Time	End Date	End Time
11/01/1998	0000	02/23/2009	0410

Subject:	TWP/SMET/C2 - Wind Speed data contain offset due to induced voltage
DataStreams:	twpsmet60sC2.b1
Description:	The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s.
Measurements:	twpsmet60sC2.b1: Upper sensor, wind speed vector average(up_spd_vec_avg) Upper sensor, wind speed minimum(up_spd_min) Lower sensor, wind speed minimum(lo_spd_min) Upper sensor, wind speed maximum(up_spd_max) Lower sensor, wind speed arithmetic average(lo_spd_arith_avg) Lower sensor, wind speed maximum(lo_spd_max) Lower sensor, wind speed vector average(lo_spd_vec_avg) Lower sensor, wind speed standard deviation(lo_spd_sd) Upper sensor, wind speed arithmetic average(up_spd_arith_avg) Upper sensor, wind speed standard deviation(up_spd_sd)

Back To Table of Contents

DQRID : D081022.8

Start Date	Start Time	End Date	End Time
03/12/2002	0000	10/17/2008	0627

Subject:	TWP/SMET/C3 - Wind Speed data contain offset due to induced voltage
DataStreams:	twpsmet60sC3.b1
Description:	The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s.
Measurements:	twpsmet60sC3.b1: Upper sensor, wind speed maximum(up_spd_max) Lower sensor, wind speed minimum(lo_spd_min) Lower sensor, wind speed standard deviation(lo_spd_sd) Lower sensor, wind speed maximum(lo_spd_max) Upper sensor, wind speed arithmetic average(up_spd_arith_avg) Lower sensor, wind speed vector average(lo_spd_vec_avg) Upper sensor, wind speed minimum(up_spd_min) Lower sensor, wind speed arithmetic average(lo_spd_arith_avg) Upper sensor, wind speed vector average(up_spd_vec_avg) Upper sensor, wind speed standard deviation(up_spd_sd)

Back To Table of Contents

DQRID : D081027.2

Start Date	Start Time	End Date	End Time
10/05/2008	2311	10/05/2008	2344

Subject:	TWP/SMET/C2 - ORG rainrate high due to calibration.
DataStreams:	twpsmet60sC2.b1
Description:	The rainrate from the ORG was high due to calibration. This data is not real.
Measurements:	twpsmet60sC2.b1: Precipitation maximum(precip_max) Precipitation mean(precip_mean) precipitation minimum(precip_min) Precipitation standard deviation(precip_sd)

Back To Table of Contents

DQRID : D081114.1

Start Date	Start Time	End Date	End Time
11/04/2008	1145	11/04/2008	1145

Subject:	TWP/SONDE/C2 - Defective Temperature Sensor
DataStreams:	twpsondewnpnC2.b1
Description:	Temperature sensor shows a +30C offset for duration of flight.
Measurements:	twpsondewnpnC2.b1: Dry bulb temperature(tdry)

Back To Table of Contents

DQRID : D081222.2

Start Date	Start Time	End Date	End Time
12/14/2008	0457	12/30/2008	0040

Subject:	TWP/SKYRAD/C3 - Direct normal instrument failure
DataStreams:	twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:	The NIP instrument (short_direct_normal data stream) failed giving bad data during this time period. The failure start time coincides with a reported DC power failure but no connection between the reported power failure and the failure of this instrument could be determined. Ops also reported the tracker clock running 2.9 minutes slow during maintenance on 12/22 0300GMT (see CS-2008-0714). Again, the slow clock is not suspect and did not appear to affect alignment. Ops replaced the NIP instrument on 12/30 and short_direct_normal data resumed normal operation. Disregard the short_direct_normal (NIP) data during this time period or calculate using the global and diffuse instruments and the following relationship: short_direct_normal = ((down_short_hemisp - down_short_diffuse_hemisp))/cos(zenith angle)
Measurements:	twpskyrad60sC3.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) twpskyrad20sC3.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal)

Back To Table of Contents

DQRID : D081222.3

Start Date	Start Time	End Date	End Time
12/17/2008	1942	12/21/2008	2215

Subject:	TWP/SKYRAD/C2 - Tracker failure
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	Tracker failed to wake up on 12/17. Ops reset tracker on 12/21. The affected instruments are the 8-48 (down_short_diffuse) and NIP (direct_normal) shortwave instruments.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse)

Back To Table of Contents

DQRID : D090129.1

Start Date	Start Time	End Date	End Time
01/23/2009	2100	01/27/2009	0715

Subject:	TWP/SKYRAD/C3 - Tracker inoperative
DataStreams:	twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:	The tracker at Darwin failed 01/23. The tracker was power cycled on 01/27 and it returned to normal operation. The affected data streams are short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48). The down_short_hemisp are not affected. The down_long_hemisp1 and 2 (PIR1 and PIR2) should not be affected but direct sun can affect individual instrument performance.
Measurements:	twpskyrad60sC3.b1: Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Standard Deviation(down_long_hemisp1_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Minima(down_long_hemisp1_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_case_temp) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1(down_long_hemisp1) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Maxima(down_long_hemisp1_max) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_dome_temp) twpskyrad20sC3.a0: Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_case_resist) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_case_resist) Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_dome_resist) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse)

Back To Table of Contents

DQRID : D090129.4

Start Date	Start Time	End Date	End Time
01/27/2009	1850	01/30/2009	1535

Subject:	TWP/SMET/C3 - Reprocess: Station Pressure values reported in hPa instead of kPa.
DataStreams:	twpsmet60sC3.b1
Description:	An incorrect program was entered into the datalogger. This program did not convert the station pressure from hPa to kPa. This made the values larger by a factor of 10 and caused the QC bit to be tripped.
Measurements:	twpsmet60sC3.b1: Barometric Pressure(atmos_pressure)

Back To Table of Contents

DQRID : D090224.4

Start Date	Start Time	End Date	End Time
01/08/2009	2331	01/08/2009	2331

Subject:	TWP/SONDE/C2 - Suspect RH values
DataStreams:	twpsondewnpnC2.b1
Description:	RH values only are suspect for the duration of this radiosonde flight, exhibiting a "sawtooth" pattern.
Measurements:	twpsondewnpnC2.b1: Relative humidity inside the instrument enclosure(rh)

Back To Table of Contents

DQRID : D090304.1

Start Date	Start Time	End Date	End Time
02/07/2009	0100	04/03/2009	0225

Subject:	TWP/SMET/C1 - Optical Rain Gage Inoperative
DataStreams:	twpsmet60sC1.b1
Description:	Beginning on 02/07/2009, the trending between the TBRG and ORG began to look poor, one recording precip when the other was not and vice versa. After a while the ORG quit registering any precip at all. ORG was replaced.
Measurements:	twpsmet60sC1.b1: Precipitation mean(precip_mean) Precipitation maximum(precip_max) Precipitation standard deviation(precip_sd) precipitation minimum(precip_min)

Back To Table of Contents

DQRID : D090328.1

Start Date	Start Time	End Date	End Time
03/25/2009	2000	05/18/2009	0442

Subject:	TWP/SKYRAD/C2 - Tracker inoperative
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	The tracker failed in park position. Tracker was replaced 5/14 but did not resume fully normal operation until 5/18. The down_short_diffuse and short_direct_normal data are directly affected by this failure. These data are not recoverable.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) twpskyrad20sC2.a0: Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse)

Back To Table of Contents

DQRID : D090515.1

Start Date	Start Time	End Date	End Time
04/19/2005	0420	04/04/2009	0115

Subject:	TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees
DataStreams:	twpsmet60sC3.b1
Description:	The temperature of the SMET system was biased low by 1.06 Deg C due to a non-precision resistor being used int he measurement circuit. The data will be reprocessed. Saturation Vapor pressure and Vapor pressure will have to be reprocessed also. Add 1.06 degrees to the temperature data. Correct Sat Vap Press using the Buck approximation: Es = 6.1121exp((17.502T)/(240.97 + T) where T is the temperature in C. Correct Vapor pressure using: E = (RHEs)/100
Measurements:	twpsmet60sC3.b1: Vapor pressure standard deviation(vappress_sd) Mean Air Temperature or Hardware Error(temp_mean) Vapor pressure mean(vappress_mean) Std Dev of Air Temperature(temp_sd)

Back To Table of Contents

DQRID : D090605.2

Start Date	Start Time	End Date	End Time
05/21/2009	1855	05/25/2009	2100

Subject:	TWP/SKYRAD/C2 - Instrument grounding problem
DataStreams:	twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:	During this time period the IRT analog output line appears to have adversely affected the skyrad datalogger grounding. This resulted in intermittent anomalous readings across all skyrad datalogger channels including logger voltage.
Measurements:	twpskyrad60sC2.b1: Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Standard Deviation(down_long_hemisp1_std) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp) Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal) Sky Infra Red Temperature Minima(sky_ir_temp_min) Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_case_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Maxima(down_long_hemisp1_max) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp) Sky Infra Red Temperature Maxima(sky_ir_temp_max) Sky Infra-Red Temperature(sky_ir_temp) Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min) Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp) Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp) Down-welling unshaded pyranometer voltage(down_short_hemisp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1(down_long_hemisp1) Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard Deviation(down_short_hemisp_std) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Minima(down_long_hemisp1_min) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp) Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_dome_temp) Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min) twpskyrad20sC2.a0: Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_dome_resist) Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer Thermopile Voltage(inst_diffuse) Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile Voltage(inst_global) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_case_resist) Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile Voltage(inst_direct_normal) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp) Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_case_resist) Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal) Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_dome_resist) Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp)

Back To Table of Contents

END OF DATA